Unit 7 The Atmosphere

Without the greenhouse effect the Earth would be _______ than it is today.

• warmer

• drier

• colder

• wetter

Which of the following is the most likely global climate change?

• a decrease in the overall temperature of Earth

• an increase in the overall temperature of the Earth

• an increase in the number of cold climates

• no change to global climate

Driving cars lowers the pH of the oceans by _______.

• releasing CO₂ that dissolves and forms acid in the oceans

• releasing pollutants that lead to smog

• releasing CO that dissolves and forms acid in the oceans

• releasing pollutants that lead to acid rain

Which is one factor that adds to the greenhouse effect?

• a decrease in the amount of dust in the atmosphere

• a decrease in the amount of water on Earth’s surface

• an increase in gases in the atmosphere that absorb heat

• an increase in the amount of solar radiation that reflects into space

The _______ is responsible for absorbing the most UV radiation

• troposphere

• stratosphere

• mesosphere

• thermosphere

Which of the following is not a possible cause for air pollution?

• volcanoes

• industry

• combustion

• all of these are causes of air pollution

Landfill waste results in air pollution as _______.

• garbage decomposes and releases methane

• radon trapped in garbage is released

• paint and hairspray cans break down

• vandals set fire to flammable waste

How does an increase in the annual melt season in Antarctica have a global effect?

• It causes an increase in heat related illness and death.

• It causes the global concentration of carbon dioxide to decrease.

• The water in the melting glaciers can cause sea levels to rise.

• It dilutes the oceans causing acidification.

A harmful substance that is emitted directly into the atmosphere is known as a -

• primary air pollutant

• secondary air pollutant

• particular pollutant

• hazardous waste

Which two substances are primarily responsible for the acidification of rain water and, in turn, soils and large bodies of water?

• Sulfur and nitrogen oxides

• Carbon dioxide and oxygen

• Carbon monoxide and carbon dioxide

• Oxygen and Sulfur